Mitsubishi Electric melsec q00ujcpu User Manual page 231

2) When the sampling trace is interrupted
If SM801 (Trace start) is turned off during sampling trace, execution of the sampling trace will be interrupted.
When the sampling trace is interrupted, the trace count is cleared.
The sampling trace restarts by turning on SM801.
SM800
(Trace preparation)
SM801
(trace start)
SM802
(Trace execution in progress)
SM803
(Trace trigger)
SM804
(After trace trigger)
SM805
(Trace completed)
Figure 6.66 Operation flow chart of the special relay (for sampling trace interruption)
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*1
Trigger SM801
executed off
Number of
traces
The trace count is cleared.
after trigger
*1: SM801 also turns off when the sampling trace is interrupted by GX Developer.
SM801 Trace
Trigger
on executed completed
Number of
traces
after trigger